On Friday 21 July 2017 13:45:51 Dan34 wrote: [..] > > In short, these could affect my case: SO_RCVBUF, SO_SNDBUF on nginx side and > whatever buffering nginx uses for handling data. I run that same test with > 25MB data and I got totally identical result: 12.5MB was buffered on nginx > side. That stuff that could affect my case cannot really add up to 12.5MB > and 10 minute of time. > There is a wild possibility that tcp window scaling resulted in some huge > window on node->nginx side and ended up storing that 12MB in tcp window > itself but i'm not sure if TCP window should be accounted into these > SO_RCVBUF or that RCVBUF is extra data on top of internals of TCP. >
nginx doesn't set SO_RCVBUF/SO_SNDBUF by default, which usually means that kernel will use system defaults and auto-scalling. > So,.. any ideas how come nginx ends up buffering 12.5MB data? > You should check tcpdump (or wireshark) to see where actually 12.5MB of data have been stuck. wbr, Valentin V. Bartenev _______________________________________________ nginx mailing list nginx@nginx.org http://mailman.nginx.org/mailman/listinfo/nginx
